Pretty much just suits and shit.

Sadly.

Suits and shit to be sure, but one can look to the Aesthetic Movement to liven things up.

Oscar of course is the poster child.

Velvet suits give a bit of flair and texture.

When the Punch started poking fun at something, you know it was popular enough that people would get the joke.

Then of course post-Rococo and pre-Victorian you've got the Directoire and Regency. Lots of nouveau riche posturing and silly hats